Macro mk_slots 

macro_rules! mk_slots {
    (
    $($var_name:ident),+ $(,)?
) => { ... };
}

Convenience macro to batch-create multiple Slots.

mk_slots!(foo, bar, baz);

is a shorthand for multiple mk_slot() calls:

let foo = &mut mk_slot();
let bar = &mut mk_slot();
let baz = &mut mk_slot();

A so-created &mut Slot<T> is then to be used to derive a StackBox<'slot, T> out of it, by feeding a value to the slot:

• either by using StackBox::new_in(),

• or the equivalent .stackbox() convenience method on Slots.